STIGQter: STIG Summary: SUSE Linux Enterprise Server 15 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 23 Apr 2021:

The SUSE operating system must generate audit records for all uses of the privileged functions.

DISA Rule

SV-234963r622137_rule

Vulnerability Number

V-234963

Group Title

SRG-OS-000327-GPOS-00127

Rule Version

SLES-15-030640

Severity

CAT III

CCI(s)

• CCI-001877 - The information system provides an audit reduction capability that supports after-the-fact investigations of security incidents.
• CCI-001878 - The information system provides a report generation capability that supports on-demand audit review and analysis.
• CCI-001879 - The information system provides a report generation capability that supports on-demand reporting requirements.
• CCI-001880 - The information system provides a report generation capability that supports after-the-fact investigations of security incidents.
• CCI-001881 - The information system provides an audit reduction capability that does not alter original content or time ordering of audit records.
• CCI-001882 - The information system provides a report generation capability that does not alter original content or time ordering of audit records.
• CCI-001889 - The information system records time stamps for audit records that meet organization-defined granularity of time measurement.
• CCI-001814 - The Information system supports auditing of the enforcement actions.
• CCI-002234 - The information system audits the execution of privileged functions.
• CCI-001914 - The information system provides the capability for organization-defined individuals or roles to change the auditing to be performed on organization-defined information system components based on organization-defined selectable event criteria within organization-defined time thresholds.
• CCI-001875 - The information system provides an audit reduction capability that supports on-demand audit review and analysis.

Weight

10

Fix Recommendation

Configure the SUSE operating system to generate an audit record for any privileged use of the "execve" system call.

Add or update the following rules in "/etc/audit/rules.d/audit.rules":

-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k setuid
-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k setuid
-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k setgid
-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k setgid

To reload the rules file, restart the audit daemon

> sudo systemctl restart auditd.service

or issue the following command:

> sudo augenrules --load

Check Contents

Verify the SUSE operating system generates an audit record for any privileged use of the "execve" system call.

> sudo auditctl -l | grep -w 'execve'

-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k setuid
-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k setuid
-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k setgid
-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k setgid

If both the "b32" and "b64" audit rules for "SUID" files are not defined, this is a finding.

If both the "b32" and "b64" audit rules for "SGID" files are not defined, this is a finding.

Note:
The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.

Vulnerability Number

V-234963

Documentable

False

Rule Version

SLES-15-030640

Severity Override Guidance

Verify the SUSE operating system generates an audit record for any privileged use of the "execve" system call.

> sudo auditctl -l | grep -w 'execve'

-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k setuid
-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k setuid
-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k setgid
-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k setgid

If both the "b32" and "b64" audit rules for "SUID" files are not defined, this is a finding.

If both the "b32" and "b64" audit rules for "SGID" files are not defined, this is a finding.

Note:
The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.

Check Content Reference

M

Target Key

5274

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